<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>计算属性的基本使用</title>
</head>
<body>
    <div id="app">
        <h2>{{firstName+' '+lastName}}</h2>

        <h2>{{firstName}} {{lastName}}</h2>

        <!-- 使用计算属性 -->
        <h2>{{fullName}}</h2>
    </div>

    <script src="../vue/vue.js"></script>
    <script>
        const app = new Vue({
            el:'#app',
            data:{
                firstName:'spa',
                lastName:'ll'
            },
            computed:{
                fullName(){
                    return this.firstName+' '+this.lastName
                }
            }
        });
    </script>
</body>
</html>